Maktin hubbell



(Mode1.)

HUBBELL.

OLEVIS.

No. 249,941. Patented N017.Z2,1881.

mvnmron: mM r WITNESSES ATTORNEYS.

fa -M07 NITED STATES PATENT OFFICE.

MARTIN HUBBELL, OF MOUNT KISOO, NEW YORK.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 249,941, dated November22, 1881.

Application filed May 11, 1881.

(Model) To all whom it may concern Be it known that I, MARTIN HUBBELL,of Mount Kisco, in the county of Westchester and State of New York, haveinvented certain useful Improvements in Olevises for Flows and otherImplements, of which the following is'a specification.

The object of my invention is to facilitate the adjustment of theclevis-ring in any desired position.

The invention consists in a clevis with a longitudinal groove in theinner edge of its end slot,and with a series of notches, forming teeth,in the opposite edge, this clevis being pivoted in the ordinary mannerto aplow-heam. The extremity of the latter is provided with a series ofvertical grooves. The clevis and the ring are placed in the desiredposition, and

are locked in the same by means of a key fitting in the slot of theclevis.

In the accompanying drawings, Figure 1 is a longitudinal elevation of myimproved plow. Fig. 2 is a horizontal sectional view of the same on theline '00 a", Fig. 1.

Similar letters of reference indicate corresponding parts.

The c evis A is of the ordinary shape, but has a longitudinal groove, B,in theinner edge of its end slot, 0, and the outer edge of this slot isprovided with a series of notches, D D. A key or flat pin, E, with aknob or head, E, or a ring at the upper end, the width of which key isequal to the distance from the deepest point of the groove B to theouter edge of the teeth between the notches D, fits into this slot 0,the clevis being provided at the top and bottom with short slots toadmit this key. A locking wire or strip of leather or other suitablelatch, F, is attached to the clevis, and is passed into an aperture nearthe upper end of the key to lock this key in the clevis. The

plow-beam G is provided atitsend with a block, H, suitably attached tothis beam, and provided in its outer rounded surface with a series ofvertical grooves, J J, of the same width as the grooves B of the clevis.The clevis is pivoted to the beam G by means of the pintle K in such amanner that the inner edge of the slot 0 will coincide with the outeredge of the end block, H, as shown.

The operation is as follows: The clevis-ring L is placed into thedesired notch D, and the clevis is inclined laterally toward the beam asmuch as may be desired until the groove B of the cleviscoincides withone of the grooves J of the end block, H. The key E is then placed intothe clevis, and as it passes through the grooves B and J it looks theclevis in the position it has at the time. As the key fills the slot inthe manner described, it also looks the clevis-ring L in the notch inwhich it was at the time the key was inserted.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent l. The combination, with the clevis A, providedwith a longitudinal groove, B,in theinner edge of its slot 0, and withnotches D in the opposite edge, of the plow-beam G, of the clevis-ringL, and the key E, substantially as herein shown and described, and forthe pur pose set forth.

. 2. The combination,with the clevis-beam G,

with grooves J in its front end, of the clevis with a groove, 0, andnotches D in the edges of its slot, the key E, the ring L, and latch F,substantially as shown and described.

MARTIN HUBBELL.

Witnesses:

W. W. FISH, JOHN B. UHANDLEY.

